Rotor head for rotary wing aircraft

Details Rotor head for rotary wing aircraft Rotor head for rotary wing aircraft

1991-09-27

1993-11-30

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Lead-lag type rotor blade movement

416134A, 416140, B64C 2751

Patent

active

052660052

ABSTRACT:
A rotor head for a rotary wing aircraft rotor blades, such that each blade is coupled to the hub by an attachment assembly. The attachment assembly includes a thrust bearing attached to the hub for allowing angular oscillations, and drag damping device coupled between the blade and the hub for damping movements of drag caused by rotation of the rotor head. The drag damping device has hydro-elastic elements which are pivotable with respect to each other about a common axis. The damping device as also disposed to pivot in a flapping direction of the blade through a pivot joint.

REFERENCES:
patent: 1948457 (1934-02-01), Larsen
patent: 2155427 (1939-04-01), Larsen
patent: 2516781 (1950-07-01), Magrum et al.
patent: 3967918 (1976-07-01), Mouille et al.
patent: 4178130 (1979-12-01), Ferris et al.
patent: 4361415 (1982-11-01), Aubry
patent: 4732540 (1988-03-01), Mouille et al.
patent: 5007799 (1991-04-01), Mouille et al.

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